Originally Posted by JSWolf
The simple solution is to just remove the internal ToC. It's not needed and it's not wanted. The external ToC will do fine. This way, you don't need a ToC entry for the ToC since you won't have an internal ToC. I find an internal ToC in an ePub to be insulting.
In most situations I agree with you. However, there are situations when a internal TOC is justified. If a TOC contains an excerpt of each chapter, as sometimes in non-novels, it can have an added value.
Usually I don't use it, but for those kind of books I sometimes do. It will help the reader to find the right chapter.